EP2082134B1 - Übertragungsvorrichtung in homogenisator oder hochdruckkolbenvorrichtung - Google Patents

Übertragungsvorrichtung in homogenisator oder hochdruckkolbenvorrichtung Download PDF

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Publication number
EP2082134B1
EP2082134B1 EP06821731A EP06821731A EP2082134B1 EP 2082134 B1 EP2082134 B1 EP 2082134B1 EP 06821731 A EP06821731 A EP 06821731A EP 06821731 A EP06821731 A EP 06821731A EP 2082134 B1 EP2082134 B1 EP 2082134B1
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EP
European Patent Office
Prior art keywords
reducer
fixed body
crankshaft
motor
flange
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP06821731A
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English (en)
French (fr)
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EP2082134A1 (de
Inventor
Marco Gandini
Simone Grandi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GEA Niro Soavi SpA
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GEA Niro Soavi SpA
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Application filed by GEA Niro Soavi SpA filed Critical GEA Niro Soavi SpA
Priority to DK06821731.4T priority Critical patent/DK2082134T3/da
Publication of EP2082134A1 publication Critical patent/EP2082134A1/de
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/14—Pistons, piston-rods or piston-rod connections
    • F04B53/144—Adaptation of piston-rods
    • F04B53/146—Piston-rod guiding arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections

Definitions

  • the present invention relates to a transmission apparatus, in a homogeniser or high pressure piston pump, said apparatus comprising: a fixed body housing a rotating crankshaft, a motor able to actuate the crankshaft, a reducer interconnected between said shaft and said transmission means.
  • Documents US-A-223/131 , US-A-2419775 US-A-1385141 and GB-A 547455 disclose such transmission apparatus.
  • the present invention further relates to a technical solution for the assembly of a transmission apparatus, for a homogeniser or high pressure piston pump.
  • apparatuses known as homogenisers are frequently used.
  • Such apparatuses generally comprise a piston pump part, used to achieve the reciprocating motion of the pumping pistons, synchronous and mutually offset by an angle 360°/n where n is the number of the pistons.
  • the Italian patent application PR99A000045 discloses a homogeniser comprising an adjustable valve (called homogenising valve), which accomplishes the forced passage of the fluid to be treated from a high pressure area to a low pressure area, and a transmission apparatus, in turn comprising a high pressure piston pump, an electric motor which drives the pump and a reducer connected between the motor and the pump.
  • Said reducer is necessary to reduce the rotation rate of the motor (generally about 1500 ö 1800 revolutions per minute) to a speed that is useful for the operation of the pump (about 150 ö 180 revolutions per minute).
  • the reducer is of the type with parallel axes and it achieves a reduction ratio of about 1:5, whilst a further reduction of said rotation rate (about 1:2) is achieved by the means for transmitting motion from the motor to the reducer, generally comprising a system of multiple belts with pulleys.
  • the pump is provided with a crankshaft:, mounted on a fixed pump body, that through a classic piston rod / crank / cross head mechanism allows the reciprocating motion of the n pumping pistons that move and compress the fluid within the process part of the machine.
  • the connection between the reducer, the pump and the motor takes place according to a fastening / assembly technique called "pendulum-like".
  • Said technique provides for keying the reducer (in particular, the slow shaft of the reducer) directly on a projection of the crankshaft of the pump and connecting, by means of a belt and pulley system, the fast shaft of the reducer to the motor.
  • the reducer is movable relative to the pump body, because it can rotate around the axis defined by the crankshaft. This possibility of rotating the reducer around the crankshaft is exploited when assembling the transmission apparatus, to apply the necessary tension to the belt system in order to transit the driving torque from the motor to the crankshaft.
  • the distance between the motor and pump body is fixed, therefore a rotation of the reducer around its own slow shaft (connected to the crankshaft) entails a change in the distance between the fast shaft of the same reducer and the motor, starting from the assumption that the reducer is of the kind with non coaxial shafts.
  • the pendulum-like mounting of the reducer also provides for the presence of a reaction arm, which fastens the reducer to a fixed frame, exerting thereon a traction force in a direction that is parallel and is opposite in direction relative to the tension of the belt, to counter-balance it.
  • the pendulum-like mounting of the reducer is convenient during the assembly stage, because the belt is tensioned acting on the reaction arm, whose length can be varied.
  • Said forces entail an oscillatory motion of the reducer both relative to a plane that is orthogonal to the axis of the crankshaft, and relative to a reference plane that is perpendicular to the crankshaft, resulting in a complex oscillatory motion; moreover, said flexing moments combine with the twisting moment due to point load stresses generated by the individual pumping pistons during the compression phase, in relation to the rotation of the crankshaft, thus subjecting it to undesired stresses. Therefore, prior art technical solutions globally entail possible limitations with regard to the reliability of the transmission system.
  • An object of the present invention is to eliminate the aforesaid drawbacks and to make available a transmission apparatus, in a homogeniser or high pressure piston pump, that is particularly rugged and reliable, within a particularly simple and economical solutions, even in situations of unforeseeable overload of the machine due to incorrect conditions of use thereof .
  • An additional object of the present invention is to make available a method for assembling a transmission apparatus, in a homogeniser with high pressure piston pump, which assures ruggedness and reliability for the apparatus itself.
  • the number 1 designates a transmission apparatus in a homogeniser
  • the number 2 designates a fixed frame supporting the transmission apparatus 1.
  • the reference number 3 designates an electric motor, connected to a reducer 4 by means of a system of parallel belts 5 and pulleys 6.
  • said reducer 4 is connected to a fixed body 7.
  • the motor 3 is originally movable relative to the frame 2, because is bears on slides 8, along which it can translate.
  • the position of the motor 3 relative to the frame 2 is adjusted and fattened by actuating means, constituting, in the illustrated embodiment, by a tie rod 9.
  • Figures 3 and 4 show the connection between the fixed body. 7 and the reducer 4, the latter being shown in see-through view.
  • the fixed body 7, integral with the frame 2 houses a crankshaft 10, of a known kind, rotating within said fixed body 7.
  • the crankshaft. 10 has an overhang portion relative to the fixed body 7.
  • On said portion of the crankshaft 10, is keyed the reducer 4; therefore, the crankshaft 10 defines the slow shaft of the reducer which, in the illustrated embodiment, is of the type with parallel axes.
  • the reference 11 designates a fast shaft of the reducer 4, which is set in rotation by the motor 3.
  • the reducer 4 is originally made integral with the fixed body 7 by fastening means.
  • Said fastening means preferably comprise a flange 12, connected to the reducer 4 by means of a plurality of screws 13a and to the fixed body 7 by means of an additional plurality of screws 13b. Therefore, the flexing moment associate to the weight of the reducer 4 and every other flexing moment associated to the tension of the belt 6 originally unloads on the fixed body 7 through the flange 12, relieving the crankshaft 10 from dangerous stresses, in particular the flexing moment generated by the torque identified by belt tension, reaction and related arm.
  • the flange 12 constitutes a rigid connection between the reducer 4 and the fixed body 7, able to inhibit the oscillations of the reducer, thanks to the presence of a plurality of screws, which work in shear mode, positioned in such a way as to surround the shaft 10, preferably, but not exclusively, distributed uniformly.
  • the flange 12 for fastening the reducer 4 to the fixed body 7 must be constructed in such a way as to assure the coupling with the body 7 itself both on a surface of the fixed body 7 perpendicular to the crankshaft 10, both on a cylindrical surface coaxial with the crankshaft 10, identified on the fixed body 7, thereby achieving a cylindrical coupling between reducer and body. In this way, an optimal distribution is obtained of the stresses between the reducer 4 and the fixed body 7, which are thus rigidly bound.
  • the reducer 4 can be connected to surfaces of the pump body 11 that are not orthogonal to the crankshaft 10, or even to other surfaces, provided that it is rigidly fastened relative to the pump body 11 or to the frame 2, with no chance of being subjected to oscillations or vibrations.
  • the present invention also makes available a method for assembling a transmission apparatus 1, comprising a pump 7 provided with a crankshaft 10 that rotates inside a fixed body 7. Said method comprises the following steps:
  • Said method originally enables to assemble the transmission Apparatus, tensioning the transmission belts 5, without moving the reducer, which always remains rigidly fastened to the fixed body 7, i.e. integral with the frame 2.
  • the described method assures a greater ruggedness and reliability of the transmission apparatus, because the stresses generated by the belt tensioning load are not discharged on the crankshaft 10 but on the fixed body 7, on the flange 12 and on the body of the reducer 4, by means of appropriate connecting members.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Reciprocating Pumps (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Control Of Transmission Device (AREA)

Claims (12)

  1. Übertragungsvorrichtung (1), in Homogenisator oder Hochdruckkolbenvorrichtung, diese Vorrichtung umfasst:
    - einen fixierten Körper (7), der eine drehende gekröpfte Welle (10) aufnimmt
    - einen Motor (3), um die gekröpfte Welle (10) anzutreiben;
    - ein Untersetzungsgetriebe (4), mit dem die Welle (10) und die Übertragungsmittel (5, 6) verbunden sind;
    dadurch gekennzeichnet, dass sie Befestigungsmittel zur festen Befestigung des Untersetzungsgetriebes (4) an den fixierten Körper (7) beinhaltet, diese Befestigungsmittel besitzen einen Flansch (12), der eine steife Verbindung zwischen dem Untersetzungsgetriebe (4) und dem fixierten Körper (7) bildet und eine zylindrische Verbindung zwischen dem Untersetzungsgetriebe und dem Körper (7) erzielt, koaxial mit der gekröpften Welle (10).
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Befestigungsmittel des Untersetzungsgetriebes (4) mindestens an einer Oberfläche des Pumpenkörpers (7), orthogonal zur Achse der Welle (10), angebracht sind.
  3. Vorrichtung nach irgendeinem der vorhergehenden Ansprüche, wobei die Übertragungsmittel ein Riemensystem (5) und entsprechende Rollen zur Übertragung der Bewegung des Motors (3) auf die Eingangswelle (11) des Untersetzungsgetriebes (4) beinhalten.
  4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass sie Mittel zur Bewegung des Motors (3) gegenüber dem fixierten Körper (7) einschließt, um das Riemensystem (5) unter Spannung zu setzen.
  5. Vorrichtung nach Anspruch 4, wobei die Mittel zur Bewegung des Motors mindestens einen Schlitten (8), an den der Motor (3) befestigt ist, und mindestens ein Antriebsmittel (9) einschließt, das in einer Richtung des Annäherns zum/Entfernen vom Untersetzungsgetriebe (4) aktiv auf den Motor einwirkt.
  6. Vorrichtung nach irgendeinem der vorhergehenden Ansprüche, wobei die Mittel zur Befestigung des Untersetzungsgetriebes (4) an den Pumpenkörper einen Flansch (12), Mittel zum Anschließen genannten Flansches an das Untersetzungsgetriebe (4) und Mittel zum Anschließen des Flansches (12) an den fixierten Körper (7) einschließen.
  7. Vorrichtung nach Anspruch 6, wobei die Mittel zum Anschließen des Flansches (12) an das Untersetzungsgetriebe eine Vielfalt von Schrauben (13a) umfassen.
  8. Vorrichtung nach Anspruch 6 oder 7, wobei die Mittel zum Anschließen des Flansches (12) an den fixierten Körper (7) eine Vielfalt von Schrauben (13b) umfassen.
  9. Vorrichtung nach Anspruch 6, bei der der Flansch (12) eine ebene Kupplungsoberfläche orthogonal zur Symmetrieachse des Flansches selbst und übereinstimmend mit derjenigen der gekröpfte Welle (10) besitzt.
  10. Vorrichtung nach Anspruch 6, wobei der Flansch (12) eine zylindrische Kupplungsoberfläche, koaxial mit der entsprechenden zylindrischen Oberfläche des fixierten Körpers (7), besitzt, und diese Oberflächen ihrerseits mit der Achse der gekröpften Welle (10) koaxial sind.
  11. Vorgang zum Zusammenbau einer Übertragungsvorrichtung, in Homogenisator oder Hochdruckkolbenvorrichtung, diese Vorrichtung besitzt einen fixierten Körper (7), der eine drehende gekröpfte Welle (10) aufnimmt, dadurch gekennzeichnet, dass er die folgenden Schritte umfasst:
    - Befestigen eines Untersetzungsgetriebes (4), verzahnt an der gekröpften Welle (10), starr an dem fixierten Körper (7), in solcher Weise, dass jede Schwingung des Untersetzungsgetriebes (4) gegenüber der gekröpften Welle (10) unterbunden ist;
    - Anschließen des Untersetzungsgetriebes (4) an einen Motor (3) mittels eines Riemensystems zur Übertragung (5) und entsprechende Rollen (6);
    - Spannen der Übertragungsrzemen (5) durch Positionsänderung des Motors (3), da dieser Motor gegenüber dem fixierten Körper (7) beweglich ist;
    - Blockieren des Motors gegenüber dem fixierten Körper, wenn der Spannvorgang abgeschlossen ist,
    dieser Schritt der Befestigung des an der gekröpften Welle (10) verzahnten Untersetzungsgetriebes (4) an den fixierten Körper (7) umfasst einen Schritt der Befestigung eines Flansches (12) an den fixierten Körper (7) und einen Schritt der Befestigung des Untersetzungsgetriebes (4) an den Flansch, dieser Flansch bekommt dadurch eine hauptsächlich zylindrische Kupplung.
  12. Homogenisator oder Hochdruckkolbenvorrichtung, dadurch gekennzeichnet, dass er/sie eine Übertragungsvorrichtung (1) besitzt, deren Typ durch einen der Ansprüche 1 bis 10 beansprucht wird.
EP06821731A 2006-10-10 2006-10-10 Übertragungsvorrichtung in homogenisator oder hochdruckkolbenvorrichtung Active EP2082134B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DK06821731.4T DK2082134T3 (da) 2006-10-10 2006-10-10 Transmissionsapparat i en homogenisator eller højtryksstempelpumpe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2006/000725 WO2008044253A1 (en) 2006-10-10 2006-10-10 Transmission apparatus in homogeniser or high pressure piston pump

Publications (2)

Publication Number Publication Date
EP2082134A1 EP2082134A1 (de) 2009-07-29
EP2082134B1 true EP2082134B1 (de) 2010-02-17

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EP (1) EP2082134B1 (de)
AT (1) ATE458145T1 (de)
DE (1) DE602006012384D1 (de)
DK (1) DK2082134T3 (de)
WO (1) WO2008044253A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1395630B1 (it) * 2009-09-10 2012-10-16 Gea Niro Soavi S P A Ora Gea Mechanical Equipment Italia S P A Omogeneizzatore ad alta pressione con riduttore epicicloidale
CN103195682B (zh) * 2013-04-02 2015-09-09 上海正乾生物技术有限公司 双模块超高压纳米均质机
ES1295974Y (es) * 2022-10-15 2023-03-16 Self Power Energy S L Máquina hidráulica o pneumática

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1385141A (en) * 1920-01-16 1921-07-19 F E Myers And Brother Power-head
US2231131A (en) * 1937-06-14 1941-02-11 Dempster Mill Mfg Company Deep well pump
GB547455A (en) * 1940-06-15 1942-08-27 Linde Air Prod Co Improvements in method and apparatus for pumping volatile liquids
US2419775A (en) * 1944-07-03 1947-04-29 Woodruff & Edwards Inc Pump
IT1248038B (it) * 1991-06-11 1995-01-05 Siti Dispositivo per alimentare liquido sotto pressione a un circuito idraulico.
US5551845A (en) * 1995-01-10 1996-09-03 Milam; David N. Medical air vacuum
IT1308543B1 (it) 1999-05-18 2002-01-08 Niro Soavi Spa Pompa ad alta pressione.

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Publication number Publication date
WO2008044253A1 (en) 2008-04-17
DK2082134T3 (da) 2010-06-07
DE602006012384D1 (de) 2010-04-01
EP2082134A1 (de) 2009-07-29
ATE458145T1 (de) 2010-03-15

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